Rice Lake 420 Plus HMI Digital Weight Indicator Installation Manual - Manual (Page 8)

4 420 Plus Installation Manual
Table 1-1 shows which annunciators are used for all combinations of configured primary and secondary units. For
example:
• If the primary unit is pounds (lb) and the secondary unit is kilograms (kg), the
lb
LED is lit for primary
units,
kg
for secondary units.
• If the primary unit is pounds (lb) and the secondary unit is short tons (tn), the
lb
LED is lit for primary
units,
kg
for secondary units. There is not an LED for short tons, so the
kg
LED is used as the secondary
units annunciator.
• If the primary unit is short tons (tn) and the secondary unit is pounds (lb), the
lb
LED is lit for primary units
(tn), and
kg
is lit for secondary units (lb). Because there is no LED for short tons, the
lb
and
kg
LEDs are
used as primary and secondary units annunciators.
See Section on page 19 for more information about configuring primary and secondary display units.
Table 1-1. Units Annunciators, Showing Primary / Secondary LEDs Used for All Configurations
Primary Unit
Secondary Unit
lb kg oz g tn t none
lb lb / lb lb / kg lb / oz lb / g lb / kg
kg kg / lb kg / kg kg / oz kg / g lb / kg
oz oz / lb oz / kg oz / oz oz / g oz / kg
g g / lb g / kg g / oz g / g g / kg
tn lb / kg lb / kg lb / oz lb / g lb / lb lb / kg lb / kg
t lb / kg lb / lb lb / kg
none lb / kg lb / kg lb / lb
1.4 Indicator Operations
Basic
420 Plus
operations are summarized below.
1.4.1 Toggle Gross/Net Mode/Piece Count
Press the
GROSS/NET
key to switch the display mode
from gross to net, or from net to gross. If a tare value
has been entered or acquired, the net value is the gross
weight minus the tare.
Gross mode is shown by the
Gross
annunciator; net
mode is shown by the
Net
annunciator.
1.4.2 Toggle Units
Press the
UNITS
key to switch between primary and
secondary units. The appropriate units LED to the right
of the display is lit.
1.4.3 Zero Scale
1. In gross mode, remove all weight from the
scale and wait for the standstill annunciator
(
).
2. Press the
ZERO
key. The center of zero ( )
annunciator lights to indicate the scale is
zeroed.
1.4.4 Acquire Tare
1. Place container on scale and wait for the
standstill annunciator ( ).
2. Press the
TARE
key to acquire the tare weight
of the container. Net weight is displayed and
the (
) annunciator lights to show the tare
value was entered
1.4.5 Enter Tare (Keyed Tare)
1. Use the numeric keypad to enter the tare value,
then press the
TARE
key.
2. Net weight is displayed and the ( )
annunciator lights to show the tare value was
entered.
1.4.6 Remove Stored Tare Value
1. Remove all weight from the scale and wait for
the standstill annunciator ( ).
2. Press the
TARE
key. The ( ) annunciator goes
off, indicating the tare value has been removed.
Note
Indicators with the REGULA parameter set to
NONE or NTEP (see Section 3.2.5 on page 23)
can clear a stored tare value using the
following procedure:
1. Press
DISPLAY TARE
to show the stored tare
value.
2. Press the
CLEAR
key twice to remove the
stored tare.